A new species of Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from the rio Tocantins-Araguaia basin, Brazil
Author
Zawadzki, Cláudio Henrique
Author
Oliveira, Renildo Ribeiro de
Author
Debona, Tiago
text
Neotropical Ichthyology
2013
2013-03-31
11
1
73
80
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100073&lng=en&tlng=en
journal article
5718
10.1590/S1679-62252013000100008
b3748d17-c3e5-4e9d-9ec5-cb5e6a51f2f8
1982-0224
4566852
Table 1. Morphometric data and counts of Hypostomus delimai. SD = Standard Deviation. | Holotype plus 21 specimens |
|---|
| Holotype | Range | Mean/SD |
|---|
| Standard length (mm) | 235.2 | 103.9-253.1 | 188.3 ± 41.92 |
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| Percents of SL |
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| Predorsal length | 39.0 | 36.0-41.9 | 39.5 ± 1.45 |
|---|
| Head length | 32.9 | 31.0-36.9 | 33.9 ± 1.71 |
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| Cleithral width | 29.4 | 28.9-32.1 | 30.4 ± 0.97 |
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| Head depth | 21.5 | 19.8-24.2 | 22.1 ± 1.12 |
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| Interdorsal length | 15.4 | 11.8-19.0 | 16.3 ± 1.78 |
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| Caudal-peduncle length | 29.0 | 25.9-29.7 | 28.0 ± 0.95 |
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| Caudal-peduncle depth | 12.2 | 10.6-12.7 | 11.7 ± 0.51 |
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| Dorsal-fin spine length | 31.7 | 29.7-35.4 | 32.8 ± 1.71 |
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| Thoracic length | 26.5 | 22.0-29.2 | 26.4 ± 2.00 |
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| Percents of head length |
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| Cleithral width | 89.3 | 78.5-99.9 | 89.9 ± 5.37 |
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| Head depth | 65.2 | 60.5-72.1 | 65.2 ± 2.94 |
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| Snout length | 62.7 | 60.2-65.9 | 62.8 ± 1.31 |
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| Orbital diameter | 14.2 | 14.1-17.1 | 15.3 ± 0.84 |
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| Interorbital width | 48.9 | 46.4-54.0 | 51.0 ± 1.53 |
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| Mandibullary width | 12.4 | 12.3-15.4 | 13.5 ± 0.75 |
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| Other percents |
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| Snout length/orbital diameter | 22.7 | 22.3-28.0 | 24.4 ± 1.65 |
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| Interorbital width/orbital diameter | 29.1 | 28.2-33.3 | 30.0 ± 1.52 |
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| Interorbital width/mandibullary width | 25.4 | 24.0-30.2 | 26.4 ± 1.65 |
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| Predorsal length/first dorsal-fin spine length | 81.2 | 73.2-91.8 | 83.4 ± 4.60 |
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| Predorsal length/first pectoral-fin spine length | 76.7 | 72.0-83.1 | 76.5 ± 2.94 |
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| Predorsal length/lower caudal-fin unbranched ray length | 78.3 | 76.1-109.2 | 87.2 ± 8.55 |
|---|
| Caudal-peduncle depth/adipose-fin spine length | 60.1 | 60.1-73.8 | 67.5 ± 3.28 |
|---|
| Caudal-peduncle length/caudal-peduncle depth | 41.9 | 38.9-46.5 | 41.7 ± 2.19 |
|---|
| Cleithral width/mandibullary width | 13.9 | 13.4-17.7 | 15.0 ± 1.04 |
|---|
| Dorsal-fin base length/interdorsal length | 46.7 | 38.6-61.9 | 49.9 ± 6.16 |
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| Lower lip length/lower lip width | 34.6 | 28.4-37.5 | 32.2 ± 2.69 |
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| Counts | Holotype | Range | Mode |
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| Median plate series | 28 | 26-29 | 28 |
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| Predorsal plates | 3 | 2-4 | 3 |
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| Plates limiting supraoccipital | 6 | 5-8 | 7 |
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| Dorsal plates below dorsal-fin base | 10 | 9-10 | 10 |
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| Plates between dorsal and adipose fin | 4 | 6-8 | 6 |
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| Plates between adipose and caudal fin | 4 | 4-5 | 4 |
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| Plates between end of anal-fin base and caudal fin | 13 | 11-14 | 13 |
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| Premaxillary teeth | 11 | 10-21 | 16 |
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| Dentary teeth | 13 | 11-20 | 17 |
|---|